zipmerge man page
zipmerge — merge zip archives
zipmerge [-DhIiSsV] target-zip source-zip [source-zip ...]
zipmerge merges the source zip archives source-zip into the target zip archive target-zip. By default, files in the source zip archives overwrite existing files of the same name in the target zip archive.
Ignore directory components in file name comparisons. This option is slow for archives with many files.
Display a short help message and exit.
Ignore case in file name comparisons This option is slow for archives with many files.
Ask before overwriting files. See also -s.
Do not overwrite files that have the same size and CRC32 in both the source and target archives.
When -i is given, do not before overwriting files that have the same size and CRC32.
Display version information and exit.
zipmerge exits 0 on success and >1 if an error occurred.
zipcmp(1), ziptool(1), libzip(3)
zipmerge was added in libzip 0.6.
Dieter Baron <firstname.lastname@example.org> and Thomas Klausner <email@example.com>